We report a full optical deep sub-wavelength imaging of the vectorial components of the electric local density of states for the confined modes of a modified GaN L3 photonic crystal nanocavity. The mode mapping is obtained with a scanning near-field optical microscope operating in a resonant forward scattering configuration, allowing the vectorial characterization of optical passive samples. The optical modes of the investigated cavity emerge as Fano resonances and can be probed without the need of embedded light emitters or evanescent light coupling into the nanocavity. The experimental maps, independently measured in the two in-plane polarizations, turn out to be in excellent agreement with numerical predictions.

Vectorial near-field imaging of a GaN based photonic crystal cavity / La China, Federico; Intonti, Francesca; Caselli, Niccolò; Lotti, Francesco; Vinattieri, Anna; Vico Triviño, Noelia; Carlin, Jean-François; Butté, Raphael; Grandjean, Nicolas; Gurioli, Massimo. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - ELETTRONICO. - 107:(2015), pp. 101110-1-101110-4. [10.1063/1.4930892]

Vectorial near-field imaging of a GaN based photonic crystal cavity

LA CHINA, FEDERICO;INTONTI, FRANCESCA;CASELLI, NICCOLO';VINATTIERI, ANNA;GURIOLI, MASSIMO
2015

Abstract

We report a full optical deep sub-wavelength imaging of the vectorial components of the electric local density of states for the confined modes of a modified GaN L3 photonic crystal nanocavity. The mode mapping is obtained with a scanning near-field optical microscope operating in a resonant forward scattering configuration, allowing the vectorial characterization of optical passive samples. The optical modes of the investigated cavity emerge as Fano resonances and can be probed without the need of embedded light emitters or evanescent light coupling into the nanocavity. The experimental maps, independently measured in the two in-plane polarizations, turn out to be in excellent agreement with numerical predictions.
2015
107
101110-1
101110-4
La China, Federico; Intonti, Francesca; Caselli, Niccolò; Lotti, Francesco; Vinattieri, Anna; Vico Triviño, Noelia; Carlin, Jean-François; Butté, Raph...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1009459
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